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06 · Controle de Desgaste

Bimetálica
Proteção de Desgaste

Uma camada de alta dureza — ferro fundido branco ao cromo ou carboneto — sobre uma base de aço estrutural: resistência à abrasão onde o material desliza, absorção de impacto onde ele golpeia. Soldável e substituível em campo.

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Materiais
Camada de ferro fundido branco ao cromo / carboneto sobre aço estrutural
Dureza da camada
Até ≈700 HB (revestimento Cr7C3 58–65 HRC)
Instalação
Solda direta sobre o aço base — modular, substituível em campo
Aplicações
Lábios, laterais e fundos de caçamba, silos, calhas, pontos de transferência
Disponibilidade
Prontas para pedido ou projetadas sob medida — Máxima produtividade · Maior vida útil · Aplicação especial

A linha de proteção

Blindagem para a zona de desgaste

Botões e blocos bimetálicos

Localizado

Botões e blocos

Proteção pontual para zonas de impacto concentrado e desgaste severo.

Barras chocky bimetálicas

Modular

Barras chocky

Proteção contínua em superfícies de alto desgaste, adaptada ao mapa de desgaste de cada componente.

Chapa de revestimento de carboneto de cromo

Cr7C3 · Premium

Chapas de revestimento

Revestimento de carboneto de cromo sobre aço para calhas, silos e pontos de transferência sob abrasão por deslizamento extrema.

Guias e tiras de desgaste

Linear

Guias e tiras

Proteção linear soldada ao longo de guias, bordas de calha e linhas de contato.

Overlay technology

Chromium carbide overlay (CCO)

A chromium carbide layer fusion-bonded to a mild-steel backing by submerged- or open-arc welding. The microstructure is primary Cr7C3 carbides in a eutectic austenite matrix: the hard carbides take the abrasion while the ductile plate absorbs impact and keeps the product weldable, formable and easy to install.

Standard CCO Plate

58–63 HRC · Cr7C3 > 35%

  • ·Outlasts quenched & tempered 400 BHN plate by 5–6× in high-abrasion service
  • ·Hardness evenly distributed through the overlay
  • ·Overlay thickness tolerance under 0.5 mm · flatness within ±3 mm/m
  • ·Cut, rolled, drilled, bolted or studded to your drawing
Solda
Mild-steel or low-hydrogen consumables, no preheat required
Corte
Plasma, cut from the backing-plate side for a clean edge

Smooth CCO — premium

60–64 HRC · Crack- and bead-free surface

  • ·Automatic welding process yields a practically crack- and weld-bead-free surface
  • ·Uniform chemistry and hardness through thickness — variation typically under 3 Rockwell points
  • ·1.5–4× the service life of conventional overlay plate
  • ·Smooth face means lower friction and far less build-up handling bulk material
  • ·ASTM G65-4 mass loss: M30 < 0.15 g · M70 < 0.11 g

M30 — regular wear duty, 59–64 HRC: excellent abrasion resistance with moderate impact tolerance.

M70 — W, Nb, Ti, V and Mo added to the overlay for compound carbides: the strongest abrasion e impact resistance of the range.

M10 — non-magnetic wear plate for strong magnetic environments: 5× the life of 304 stainless in magnetic separators and iron removers.

Standard chromium carbide overlay plate showing the characteristic ribbed weld-bead surface

Standard CCO

The as-welded overlay keeps its characteristic ribbed bead pattern — full abrasion resistance, at the lowest cost per square metre.

Smooth CCO plates stacked, showing the flat crack- and bead-free overlay surface

Smooth CCO

A flat, practically crack- and bead-free face: lower friction, less material build-up and 1.5–4× the service life.

Laminated wear blocks

700 HB / 63 HRC

High-chrome white iron metallurgically bonded to a mild-steel backing by a vacuum-welding process: extreme hardness on the working face, weldable and impact-tolerant behind it. Chocky bars, wear buttons, strips, wear plates and crusher hammer tips — standard shapes or custom sizes.

Onde se aplica

Shovel, loader and excavator bucket protection · chute liners and hopper wear plates · feeder deck plates · impact plates · rock-box bars and liners · crusher liners · truck-body liners · grizzly bars · dredge wear parts, suction mouth and cutter-head protection · hoppers, fans, screens, dampers, mixers and cyclones.

Indústrias atendidas

Mining · quarrying and aggregates · cement · iron and steel making · coke and coal · dredging · civil engineering · foundry · recycling.

Ficha técnica · PDF

CCO wear plate — grades, hardness, sizes & applications

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